The Ultimate Cellular Phone Security Manual

A mail-order technical manual on cellular telephone security from Consumertronics, the New Mexico publisher run by John J. Williams that supplied the 1980s and 1990s electronic-countermeasures underground.

No catalogue record for this exact title was found in OpenLibrary, the Library of Congress or WorldCat. Consumertronics documented a closely related Williams title, Cellular & Cordless Guide, covering analog-era cloning and reprogramming, ESN and MIN data, scanning and monitoring, and countermeasures under the Electronic Communications Privacy Act. Whether the manual held here is that book under another name or a separate publication has not been established; the title page of the copy on the shelf would settle it.

Williams ran Consumertronics from New Mexico from the early 1980s into the 2000s, issuing manuals on telephone systems, cellular fraud, computer file security and related electronics. The company sold directly by post and advertised in the hobbyist and survivalist press, outside the trade channels that produce library records, which is why its output is documented so unevenly. Its cellular titles belong to the analog era, before digital and encrypted standards closed off the monitoring these manuals described.